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【多选题】
下列对平板支撑交替抬腿动作描述正确的是A.
练习者呈俯卧，双肘撑地，耳、肩、髋、膝、踝呈一条直线
B.
双腿交替向上抬起至最高点，抬腿时，支撑腿及上半身保持不动
C.
动作过程中双腿完全伸展，抬腿时，下放时吸气，动作全程保持核心收紧
D.
动作过程中，可以随腿部动作，身体向两侧来回移动
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A.
often
B.
rarely
C.
never
D.
ordinarily
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A.
Inferior
B.
Illustrate
C.
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D.
Improve
【单选题】The expression in very few cases could more concisely be stated as ______.
A.
often.
B.
rarely
C.
never.
D.
ordinarily.
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A.
Non sequitur
B.
Quick conclusion
C.
Quick generalization
D.
Hasty generalization
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